Research Article

Establishment of MDCK Stable Cell Lines Expressing TMPRSS2 and MSPL and Their Applications in Propagating Influenza Vaccine Viruses in Absence of Exogenous Trypsin

Figure 5

Growth kinetics of Re-5, Re-6, and Re-9 on MDCK-TMPRSS2 and MDCK-MSPL cells. MDCK-TMPRSS2, MDCK-MSPL, MDCK + TPCK, and MDCK cells were infected with Re-5, Re-6, and Re-9 as described and samples were taken at 12, 24, 48, 72, and 96 h after infection. Sample TCID50 were determined and calculated using the method of Reed and Muench.